Description: Activity demonstrating how greenhouse effect works using jars, heat source, and thermometers. The
activity described under "Going Further" is more scientifically accurate than the main activity. (CM)

Summary of Reviews

Reviewer:Carrie MorrillComments: The reason why the jar warms (suppressed convection) is unrelated to the greenhouse effect and might
promote misconceptions. The activity labeled "Going further" involving two jars, one with carbon dioxide and one
without, is more accurate.Read entire review:link text(Acrobat (PDF) 59kB Jun21 05)

Reviewer:Jack Ganse Comments: This site outlines an activity for simulating the greenhouse effect using glass jars and thermometers. I've encountered
variations of this activity on other websites as well-I'm not sure where the activity originated. The site provides
instructions for the activity as well as background information relating the activity to the greenhouse effect. The
materials are pretty simple and inexpensive.Read entire review: link text(Acrobat (PDF) 52kB Jun21 05)

Reviewer:Robert Croft Comments: This is a good activity to teach in a concrete way what the greenhouse effect is. However for most middle school
situations, teachers teach multiple classes and the volume/space for set up needed to conduct such a lab with all
classes is the problem. The activity itself is not the problem.Read entire review:link text(Acrobat (PDF) 57kB Jun21 05)